RC Part 12

The car is described as traveling east at 30 km/hr. From which reference point in the diagram is the motion of the car MOST likely being described?

• 1

• 2

• 3

• 4

When air rises over the open ocean, a low-pressure system is formed. Which factor increases the potential of a low-pressure system developing into a hurricane in the Northern Hemisphere?

• cool ocean currents circulating toward the equator

• increased volcanic activity in the upper latitudes

• cold air moving south from the North Pole

• warm water temperatures in the tropics

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

A scientist compared the atmospheric composition of a newly discovered planet to the atmosphere of Earth.

Which conclusion about the unknown planet can be made by using the information provided?

• It is not suitable for animals

• it will sustain a small human population

• it has enough oxygen for small nutrients

• it has many carbon dioxide releasing organisms

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Two forces of 400 newtons (N) each are acting on a box.

Which statement BEST describes the forces at work?

• the net force applied is zero

• a contact force resist movement

• the net force applied is balanced

• a contact force moves the object to the left

Tags

NGSS.MS-PS2-2

An object is traveling to the right. Which of the following shows a force acting on the object that will increase the speed of the object?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

A strong wind from the north blows in a straight south direction. However, to an observer, the wind appears to be moving to the southwest. What accounts for this shift in wind direction?

• the spin of Earth on its axis changing direction

• the rotation of Earth beneath the layer of air

• the ozone layer focusing solar energy, causing the wind to shift

• the local mountains pushing the wind to the side as it moves through the state

Tags

NGSS.MS-ESS2-6

As a meteor falls and gets closer to Earth, it encounters a resistance force. Which must occur so that the meteor overcomes the resistance force?

• The sum of the forces acting on the meteor needs to be zero.

• The forces acting on the meteor must be in the same direction.

• The force of gravity needs to be greater than the resistance force.

• The resistance force must be greater than the force being applied to the meteor.

The diagram shows three forces being applied to a crate on a floor.

If the crate is to remain stationary, what amount of force must be applied for z?

• 800 Newtons

• 1200 Newtons

• 2000 Newtons

• 2400 Newtons

Tags

NGSS.MS-PS2-2

When the two forces are applied to the moving bus, the bus will

• come to a complete stop because of unbalanced forces.

• accelerate because of unbalanced forces.

• slow down because the forces are balanced.

• move at a constant speed because the forces are balanced.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If the ball in the picture below moves east, which unbalanced force must be acting on it?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2